Are you open to silks and brocades? I would put in a request he visit a Kimono maker and ask for scraps and remnants. The Japanese often use these in their quilts which are so absolutely beautiful and so innovative. I have seen an exhibit of Japanese quilts and the way they mix fabrics is quite eclectic but oh so effective. They often mix in bits and pieces from Kimono, Obi scarves, Japanese Taupes and cottons.
Kyoto is a big city with a very active and thriving Geisha district so many Kimono makers.
Here is a fabulous blog I just found:
http://www.cashmerette.com/2015/05/k...ic-stores.html